After seeing the new Confluence I decided to learn a bit skinning and adjust Confluence to my needs...
So I started with some simple mods. I'd like to go ahead with this skin, but maybe someone is already intrested.

Fixed the end-caps in the movie and tv-show submenus
Fixed the problem with the lower menu and the addon-icons (icons now are only shown with upper menu)
Ability to hide the dark floor.png in main-menu, to have a better view on the backdrops
added a button on the home-screen for ronie's "script.globalsearch"

Screenshots will follow soon and new update will follow after fixing a severe problem with the submenus in upper menu...

The skin looks great but... I can't use it. When I installed it from the 'nerds repo, XBMC didn't ask me if I wanted to switch to the newly installed skin. I tried to select it in Appearance but the original Confluence loads instead. What am I doing wrong?